Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
Forekast - Events on Forekast are posted and voted on by the community.
pretix - pretix helps you to sell tickets for your event in an easy way. It supports multi-lingual events and provides a wide range of features
Releases.com - Releases.com is a new service that aims to be the best source for product releases online, covering everything from games, movies to the next Airbus, and yes we mean the aircraft.
Ticket Tribe - Sell tickets online with no fees per ticket
Aventrix - Aventrix is a website that helps you discover new and fun activities.